Op Man Final Review Problems

Whatis thec ritic alpath acfh c whatis theex pec

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Unformatted text preview: Y PREDECESSORS A — B — C A D A E B F C, D G D, E H F, G TIMES (DAYS) a 1 1 2 2 1 1 1 3 m 4 6 6 3 2 5 2 6 b 7 11 7 13 6 9 9 9 b. What is the c ritic al path? A­C­F­H c. What is the ex pec ted projec t c ompletion time? (Do not round interm ediate calculations. Round your answer to 3 decim al places.) Projec t c ompletion time 20.500 ± 1% day s d. What is the probability of c ompleting this projec t within 23 day s ? (Use Excel's NORMSDIST() function to find the correct probability for your com puted Z­value. Do not round interm ediate calculations. Round "z " value to 2 decim al places and final answer to 4 decim al places.) Probability 0.8810 ± 0.001 rev: 09_06_2013_QC_35007 Explanation: Immediate Ac tiv ity Predec es s ors A — B — C A D A E B http://e z to.mhe c loud.mc gr a w- hill.c om/hm.tpx? todo= pr intvie w Times (Day s ) a 1 1 2 2 1 m 4 6 6 3 2 b 7 11 7 13 6 ET 4.000 6.000 5.500 4.500 2.500 σ2 1.0000 2.7778 0.6944 3.3611 0.6944 4/29 1/29/2014 Assignme nt Pr int Vie w F G H C, D D, E F, G 1 1 3 5 2 6 9 9 9 5.000 3.000 6.000 1.7778 1.7778 1.0000 c. 4 + 5.5 + 5 + 6 = 20.500 day s d. Varianc e of projec t c ompletion time is found by adding the v arianc es of ac tiv ities on the c ritic al path. 1.0000 + 0.6944 + 1.7778 + 1.0000 = 4.4722 P(T < 23) = P(Z < 1.18) = 0.8810 (From Ex c el's NORMSDIST() func tion) 4. awar d: 1.42 out of 1.42 points Problem 4-9 There is an 82 perc ent c hanc e the projec t below c an be c ompleted in X week s or les s . MOST MOST ACTIVITY OPTIMISTIC LIKELY A 3 8 B 4 4 C 2 4 D 8 9 E 7 10 MOST P E S S I M I S TI C 13 4 9 13 10 What is X? (Round your answer to the nearest whole num ber.) X 24 Worksheet Problem 4­9 Learning Objective: 04­02 Analyze projects using network­planning models. Problem 4-9 There is an 82 perc ent c hanc e the projec t below c an be c ompleted in X week s or les s . http://e z to.mhe c loud.mc gr a w- hill.c om/hm.tpx? todo= pr intvie w 5/29 1/29/2014 Assignme nt Pr int Vie w MOST MOST ACTIVITY OPTIMISTIC LIKELY A 3 8 B 4 4 C 2 4 D 8 9 E 7 10 MOST P E S S I M I S TI C 13 4 9 13 10 What is X? (Round your answer to the nearest whole num ber.) X 24 Explanation: A c t iv it y A B C D E Mos t Optimis tic 3 4 2 8 7 Mos t Lik ely 8 4 4 9 10 Mos t Ex pec ted Pes s imis tic Ti m e 13 8.0 4 4.0 9 4.5 13 9.5 10 9.5 Varianc e 2.778 0 1.361 0.694 0.250 Firs t find the v alue of Z that res ults in a probability of 0.82. Us ing Ex c el's NORMSINV(0.82) = 0.9154. Then find the c ritic al path (ACE) and the v arianc e on the c ritic al path is 4.389. Finally , us e below equation to s olv e for X. Paths ABD 21.5 ACE 22 X = 24 5. awar d: 1.07 out of 1.42 points Problem 4-19 Your projec t to obtain c haritable donations is now 32 day s into a planned 42­day projec t. The projec t is div ided into 3 ac tiv ities . The firs t ac tiv ity is des igned to s olic it indiv idual donations . It is s c heduled to run the firs t 25 day s of the projec t and to bring in $23,000. Ev en though we are 32 day s into the projec t, we s till s ee that we hav e only 88 perc ent of this ac tiv ity c omplete. The s ec ond ac tiv ity relates to c ompany donations and is s c heduled to run for 32 day s s tarting on day 7 and ex tending through day 39. We es timate that ev en though we s hould hav e (25/32) 78 perc ent of this ac tiv ity c omplete, it is ac tually only 52 perc ent c omplete. This part of the projec t was s c heduled to bring in $148,000 in donations . The final ac tiv ity is for matc hing funds . This ac tiv ity is s c heduled to run the las t 10 day s of the projec t and has not s tarted. It is s c heduled to bring in an additional $46,000. So far $177,000 has ac tually been brought in on the projec t. http://e z to.mhe c loud.mc gr a w- hill.c om/hm.tpx? todo= pr intvie w 6/29 1/29/2014 Assignme nt Pr int Vie w Calc ulate the s c hedule v arianc e, s c hedule performanc e index , c os t v arianc e and c os t (ac tually v alue in this c as e) performanc e index . (Negative values should be indicated by a m inus sign. Do not round interm ediate calculations. Round your "perform ance index" values to 3 decim al places and "variance" to the nearest dollar am ount.) Sc hedule v arianc e Sc hedule performanc e index Cos t v arianc e Cos t performanc e index $ ­41,240 0.702 $ ­79,800 0.549 Worksheet Learning Objective: 04­03 Evaluate projects using earned value management. Problem 4­19 Problem 4-19 Your projec t to obtain c haritable dona...
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This note was uploaded on 01/29/2014 for the course MAN 4504 taught by Professor Georgekyparisis during the Fall '09 term at FIU.

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